diff options
Diffstat (limited to 'arch/mips/sibyte')
| -rw-r--r-- | arch/mips/sibyte/Kconfig | 2 | ||||
| -rw-r--r-- | arch/mips/sibyte/common/Makefile | 5 | ||||
| -rw-r--r-- | arch/mips/sibyte/common/sb_tbprof.c (renamed from arch/mips/sibyte/sb1250/bcm1250_tbprof.c) | 158 | ||||
| -rw-r--r-- | arch/mips/sibyte/sb1250/Makefile | 1 |
4 files changed, 101 insertions, 65 deletions
diff --git a/arch/mips/sibyte/Kconfig b/arch/mips/sibyte/Kconfig index bdf24a7..e6b003e 100644 --- a/arch/mips/sibyte/Kconfig +++ b/arch/mips/sibyte/Kconfig @@ -2,6 +2,7 @@ config SIBYTE_SB1250 bool select HW_HAS_PCI select SIBYTE_ENABLE_LDT_IF_PCI + select SIBYTE_HAS_ZBUS_PROFILING select SIBYTE_SB1xxx_SOC select SYS_SUPPORTS_SMP @@ -34,6 +35,7 @@ config SIBYTE_BCM112X config SIBYTE_BCM1x80 bool select HW_HAS_PCI + select SIBYTE_HAS_ZBUS_PROFILING select SIBYTE_SB1xxx_SOC select SYS_SUPPORTS_SMP diff --git a/arch/mips/sibyte/common/Makefile b/arch/mips/sibyte/common/Makefile new file mode 100644 index 0000000..8a06a4f --- /dev/null +++ b/arch/mips/sibyte/common/Makefile @@ -0,0 +1,5 @@ +obj-y := + +obj-$(CONFIG_SIBYTE_TBPROF) += sb_tbprof.o + +EXTRA_AFLAGS := $(CFLAGS) diff --git a/arch/mips/sibyte/sb1250/bcm1250_tbprof.c b/arch/mips/sibyte/common/sb_tbprof.c index ea0ca13..4fcdaa8 100644 --- a/arch/mips/sibyte/sb1250/bcm1250_tbprof.c +++ b/arch/mips/sibyte/common/sb_tbprof.c @@ -31,14 +31,29 @@ #include <linux/vmalloc.h> #include <linux/fs.h> #include <linux/errno.h> -#include <linux/types.h> #include <linux/wait.h> - #include <asm/io.h> #include <asm/sibyte/sb1250.h> + +#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) +#include <asm/sibyte/bcm1480_regs.h> +#include <asm/sibyte/bcm1480_scd.h> +#include <asm/sibyte/bcm1480_int.h> +#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X) #include <asm/sibyte/sb1250_regs.h> #include <asm/sibyte/sb1250_scd.h> #include <asm/sibyte/sb1250_int.h> +#else +#error invalid SiByte UART configuation +#endif + +#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) +#undef K_INT_TRACE_FREEZE +#define K_INT_TRACE_FREEZE K_BCM1480_INT_TRACE_FREEZE +#undef K_INT_PERF_CNT +#define K_INT_PERF_CNT K_BCM1480_INT_PERF_CNT +#endif + #include <asm/system.h> #include <asm/uaccess.h> @@ -118,7 +133,7 @@ static struct sbprof_tb sbp; : /* inputs */ \ : /* modifies */ "$8" ) -#define DEVNAME "bcm1250_tbprof" +#define DEVNAME "sb_tbprof" #define TB_FULL (sbp.next_tb_sample == MAX_TB_SAMPLES) @@ -132,6 +147,7 @@ static struct sbprof_tb sbp; * overflow. * * We map the interrupt for trace_buffer_freeze to handle it on CPU 0. + * */ static u64 tb_period; @@ -143,25 +159,36 @@ static void arm_tb(void) u64 tb_options = M_SCD_TRACE_CFG_FREEZE_FULL; /* - * Generate an SCD_PERFCNT interrupt in TB_PERIOD Zclks to trigger - *start of trace. XXX vary sampling period + * Generate an SCD_PERFCNT interrupt in TB_PERIOD Zclks to + * trigger start of trace. XXX vary sampling period */ __raw_writeq(0, IOADDR(A_SCD_PERF_CNT_1)); scdperfcnt = __raw_readq(IOADDR(A_SCD_PERF_CNT_CFG)); /* - * Unfortunately, in Pass 2 we must clear all counters to knock down a - * previous interrupt request. This means that bus profiling requires - * ALL of the SCD perf counters. + * Unfortunately, in Pass 2 we must clear all counters to knock down + * a previous interrupt request. This means that bus profiling + * requires ALL of the SCD perf counters. */ +#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) + __raw_writeq((scdperfcnt & ~M_SPC_CFG_SRC1) | + /* keep counters 0,2,3,4,5,6,7 as is */ + V_SPC_CFG_SRC1(1), /* counter 1 counts cycles */ + IOADDR(A_BCM1480_SCD_PERF_CNT_CFG0)); + __raw_writeq( + M_SPC_CFG_ENABLE | /* enable counting */ + M_SPC_CFG_CLEAR | /* clear all counters */ + V_SPC_CFG_SRC1(1), /* counter 1 counts cycles */ + IOADDR(A_BCM1480_SCD_PERF_CNT_CFG1)); +#else __raw_writeq((scdperfcnt & ~M_SPC_CFG_SRC1) | /* keep counters 0,2,3 as is */ M_SPC_CFG_ENABLE | /* enable counting */ M_SPC_CFG_CLEAR | /* clear all counters */ V_SPC_CFG_SRC1(1), /* counter 1 counts cycles */ IOADDR(A_SCD_PERF_CNT_CFG)); +#endif __raw_writeq(next, IOADDR(A_SCD_PERF_CNT_1)); - /* Reset the trace buffer */ __raw_writeq(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG)); #if 0 && defined(M_SCD_TRACE_CFG_FORCECNT) @@ -190,38 +217,37 @@ static irqreturn_t sbprof_tb_intr(int irq, void *dev_id) /* Subscripts decrease to put bundle in the order */ /* t0 lo, t0 hi, t1 lo, t1 hi, t2 lo, t2 hi */ p[i - 1] = __raw_readq(IOADDR(A_SCD_TRACE_READ)); - /* read t2 hi */ + /* read t2 hi */ p[i - 2] = __raw_readq(IOADDR(A_SCD_TRACE_READ)); - /* read t2 lo */ + /* read t2 lo */ p[i - 3] = __raw_readq(IOADDR(A_SCD_TRACE_READ)); - /* read t1 hi */ + /* read t1 hi */ p[i - 4] = __raw_readq(IOADDR(A_SCD_TRACE_READ)); - /* read t1 lo */ + /* read t1 lo */ p[i - 5] = __raw_readq(IOADDR(A_SCD_TRACE_READ)); - /* read t0 hi */ + /* read t0 hi */ p[i - 6] = __raw_readq(IOADDR(A_SCD_TRACE_READ)); - /* read t0 lo */ + /* read t0 lo */ } if (!sbp.tb_enable) { pr_debug(DEVNAME ": tb_intr shutdown\n"); __raw_writeq(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG)); sbp.tb_armed = 0; - wake_up(&sbp.tb_sync); + wake_up_interruptible(&sbp.tb_sync); } else { - arm_tb(); /* knock down current interrupt and get another one later */ + /* knock down current interrupt and get another one later */ + arm_tb(); } } else { /* No more trace buffer samples */ pr_debug(DEVNAME ": tb_intr full\n"); __raw_writeq(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG)); sbp.tb_armed = 0; - if (!sbp.tb_enable) { - wake_up(&sbp.tb_sync); - } - wake_up(&sbp.tb_read); + if (!sbp.tb_enable) + wake_up_interruptible(&sbp.tb_sync); + wake_up_interruptible(&sbp.tb_read); } - return IRQ_HANDLED; } @@ -250,8 +276,8 @@ static int sbprof_zbprof_start(struct file *filp) sbp.next_tb_sample = 0; filp->f_pos = 0; - err = request_irq(K_INT_TRACE_FREEZE, sbprof_tb_intr, 0, - DEVNAME " trace freeze", &sbp); + err = request_irq (K_INT_TRACE_FREEZE, sbprof_tb_intr, 0, + DEVNAME " trace freeze", &sbp); if (err) return -EBUSY; @@ -263,23 +289,29 @@ static int sbprof_zbprof_start(struct file *filp) IOADDR(A_SCD_PERF_CNT_CFG)); /* - * We grab this interrupt to prevent others from trying to use it, even - * though we don't want to service the interrupts (they only feed into - * the trace-on-interrupt mechanism) + * We grab this interrupt to prevent others from trying to use + * it, even though we don't want to service the interrupts + * (they only feed into the trace-on-interrupt mechanism) */ - err = request_irq(K_INT_PERF_CNT, sbprof_pc_intr, 0, - DEVNAME " scd perfcnt", &sbp); - if (err) - goto out_free_irq; + if (request_irq(K_INT_PERF_CNT, sbprof_pc_intr, 0, DEVNAME " scd perfcnt", &sbp)) { + free_irq(K_INT_TRACE_FREEZE, &sbp); + return -EBUSY; + } /* - * I need the core to mask these, but the interrupt mapper to pass them - * through. I am exploiting my knowledge that cp0_status masks out - * IP[5]. krw + * I need the core to mask these, but the interrupt mapper to + * pass them through. I am exploiting my knowledge that + * cp0_status masks out IP[5]. krw */ +#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) + __raw_writeq(K_BCM1480_INT_MAP_I3, + IOADDR(A_BCM1480_IMR_REGISTER(0, R_BCM1480_IMR_INTERRUPT_MAP_BASE_L) + + ((K_BCM1480_INT_PERF_CNT & 0x3f) << 3))); +#else __raw_writeq(K_INT_MAP_I3, IOADDR(A_IMR_REGISTER(0, R_IMR_INTERRUPT_MAP_BASE) + (K_INT_PERF_CNT << 3))); +#endif /* Initialize address traps */ __raw_writeq(0, IOADDR(A_ADDR_TRAP_UP_0)); @@ -298,7 +330,7 @@ static int sbprof_zbprof_start(struct file *filp) __raw_writeq(0, IOADDR(A_ADDR_TRAP_CFG_3)); /* Initialize Trace Event 0-7 */ - /* when interrupt */ + /* when interrupt */ __raw_writeq(M_SCD_TREVT_INTERRUPT, IOADDR(A_SCD_TRACE_EVENT_0)); __raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_1)); __raw_writeq(0, IOADDR(A_SCD_TRACE_EVENT_2)); @@ -324,24 +356,23 @@ static int sbprof_zbprof_start(struct file *filp) __raw_writeq(0, IOADDR(A_SCD_TRACE_SEQUENCE_7)); /* Now indicate the PERF_CNT interrupt as a trace-relevant interrupt */ +#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) + __raw_writeq(1ULL << (K_BCM1480_INT_PERF_CNT & 0x3f), + IOADDR(A_BCM1480_IMR_REGISTER(0, R_BCM1480_IMR_INTERRUPT_TRACE_L))); +#else __raw_writeq(1ULL << K_INT_PERF_CNT, IOADDR(A_IMR_REGISTER(0, R_IMR_INTERRUPT_TRACE))); - +#endif arm_tb(); pr_debug(DEVNAME ": done starting\n"); return 0; - -out_free_irq: - free_irq(K_INT_TRACE_FREEZE, &sbp); - - return err; } static int sbprof_zbprof_stop(void) { - int err; + int err = 0; pr_debug(DEVNAME ": stopping\n"); @@ -365,7 +396,7 @@ static int sbprof_zbprof_stop(void) pr_debug(DEVNAME ": done stopping\n"); - return 0; + return err; } static int sbprof_tb_open(struct inode *inode, struct file *filp) @@ -380,11 +411,9 @@ static int sbprof_tb_open(struct inode *inode, struct file *filp) return -EBUSY; memset(&sbp, 0, sizeof(struct sbprof_tb)); - sbp.sbprof_tbbuf = vmalloc(MAX_TBSAMPLE_BYTES); if (!sbp.sbprof_tbbuf) return -ENOMEM; - memset(sbp.sbprof_tbbuf, 0, MAX_TBSAMPLE_BYTES); init_waitqueue_head(&sbp.tb_sync); init_waitqueue_head(&sbp.tb_read); @@ -397,8 +426,9 @@ static int sbprof_tb_open(struct inode *inode, struct file *filp) static int sbprof_tb_release(struct inode *inode, struct file *filp) { - int minor = iminor(inode); + int minor; + minor = iminor(inode); if (minor != 0 || !sbp.open) return -ENODEV; @@ -419,10 +449,10 @@ static ssize_t sbprof_tb_read(struct file *filp, char *buf, size_t size, loff_t *offp) { int cur_sample, sample_off, cur_count, sample_left; - long cur_off = *offp; - char *dest = buf; - int count = 0; char *src; + int count = 0; + char *dest = buf; + long cur_off = *offp; if (!access_ok(VERIFY_WRITE, buf, size)) return -EFAULT; @@ -445,7 +475,6 @@ static ssize_t sbprof_tb_read(struct file *filp, char *buf, mutex_unlock(&sbp.lock); return err; } - pr_debug(DEVNAME ": read from sample %d, %d bytes\n", cur_sample, cur_count); size -= cur_count; @@ -461,45 +490,46 @@ static ssize_t sbprof_tb_read(struct file *filp, char *buf, dest += cur_count; count += cur_count; } - *offp = cur_off; mutex_unlock(&sbp.lock); return count; } -static long sbprof_tb_ioctl(struct file *filp, unsigned int command, - unsigned long arg) +static long sbprof_tb_ioctl(struct file *filp, + unsigned int command, + unsigned long arg) { - int error = 0; + int err = 0; switch (command) { case SBPROF_ZBSTART: mutex_lock(&sbp.lock); - error = sbprof_zbprof_start(filp); + err = sbprof_zbprof_start(filp); mutex_unlock(&sbp.lock); break; case SBPROF_ZBSTOP: mutex_lock(&sbp.lock); - error = sbprof_zbprof_stop(); + err = sbprof_zbprof_stop(); mutex_unlock(&sbp.lock); break; - case SBPROF_ZBWAITFULL: - error = wait_event_interruptible(sbp.tb_read, TB_FULL); - if (error) + case SBPROF_ZBWAITFULL: { + err = wait_event_interruptible(sbp.tb_read, TB_FULL); + if (err) break; - error = put_user(TB_FULL, (int *) arg); + err = put_user(TB_FULL, (int *) arg); break; + } default: - error = -EINVAL; + err = -EINVAL; break; } - return error; + return err; } static const struct file_operations sbprof_tb_fops = { @@ -544,8 +574,8 @@ static int __init sbprof_tb_init(void) sbp.open = 0; tb_period = zbbus_mhz * 10000LL; - pr_info(DEVNAME ": initialized - tb_period = %lld\n", tb_period); - + pr_info(DEVNAME ": initialized - tb_period = %lld\n", + (long long) tb_period); return 0; out_class: diff --git a/arch/mips/sibyte/sb1250/Makefile b/arch/mips/sibyte/sb1250/Makefile index 04c0f1a..df662c6 100644 --- a/arch/mips/sibyte/sb1250/Makefile +++ b/arch/mips/sibyte/sb1250/Makefile @@ -1,6 +1,5 @@ obj-y := setup.o irq.o time.o obj-$(CONFIG_SMP) += smp.o -obj-$(CONFIG_SIBYTE_TBPROF) += bcm1250_tbprof.o obj-$(CONFIG_SIBYTE_STANDALONE) += prom.o obj-$(CONFIG_SIBYTE_BUS_WATCHER) += bus_watcher.o |